OB-GYN 101
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Blood Chemistries

Blood chemistries refers to an analysis of a number of chemical substances in the blood, having clinical significance.

While "blood chemistries" may have a specific meaning in a specific context, the words usually mean a series of blood tests taken either to evaluate a specific organ system (eg, liver function tests), or as a general screening test (eg, SMA 12, or Chem 20).

SMA-12

Chem-20

Chem 6 (SMA 6)

Cardiac Enzymes

Liver Function Tests

Kidney Function Tests

Electrolytes

Thyroid Function Tests

Lipid Profile

Coagulation Profile

Amenorrhea Profile

 

 

 

Normal Values*

A/G Ratio

>1

Albumin

Men-Women

3.8-5.0 g/dl

Pregnancy

1.9-4.0 g/dl

Alkaline Phosphatase

Men

20-70 U/L

Women

20-150 U/L

Pregnancy

60-200 U/L

Amylase

Men

50-150 U/L

Women

60-180 U/L

Pregnancy

90-350 U/L

AST

Men

8-20 µ/L 

Women

6-18 µ/L 

Children

25-75 µ/L

Bilirubin (total)

0.2-1.0 mg/dl

Bilirubin (Indirect or Unconjugated)

0.2-0.8 mg/dl

Bilirubin (Direct or Conjugated)

0-0.2 mg/dl

Bleeding time

Earlobe (Duke)

< 8 minutes

Forearm (Ivy)

<9.5 minutes

BUN

Adults

8-23 mg/dL

Children

5-15 mg/dL

Pregnancy

5-12 mg/dL

Calcium

Men

8.8-10.0 mg/dl

Women

9.0-10.5 mg/dl

Pregnancy

8.1-9.5 mg/dl

Children

9.2-11.0 mg/dl

Chloride

Men

98-106 mmol/L

Women

98-106 mmol/L

Pregnancy

93-100 mmol/L

Cholesterol: Total

Desirable

140-200 mg/dl

Borderline

201-239 mg/dl

High

>240 mg/dl

 

Cholesterol: HDL

Men

35-70 mg/dl

Women

35-85 mg/dl

Children

30-65 mg/dl

Cholesterol: LDL

Desirable

<130 mg/dl

Borderline

130-159 mg/dl

High

>= 160 mg/dl

Cholesterol: VLDL

25-50% of Total Cholesterol

CO2 Content

Men

23-30 mmol/L

Women

21-30 mmol/L

Pregnancy

18-25 mmol/L

CPK (CK)

Men

5-100 IU/L

Women

10-70 IU/L

Pregnancy

5-40 IU/L

Creatinine

Men

0.6-1.2 mg/dl

Women

<1.5 mg/dl

Pregnancy

<1.0 mg/dl

Children

0.3-0.7 mg/dl

Creatinine Clearance

Men

70-130 ml/min

Women

91-130 ml/min

Pregnancy

120-160 ml/min

DHEAS

Men

80-640 µg/dl

Women

< 350 µg/dl

Women: Moderate Increase

350-700 µg/dl

Women: High Levels

> 700 µg/dl

Estradiol

Men

13-42 pg/ml

Women 
(Proliferative Phase)

60-250 pg/ml

Women
(Luteal Phase)

75-450 pg/ml

Women 
(Menopausal)

<10 pg/ml

Women
(Menopausal on estrogen replacement)

50-100 pg/ml

FSH

Men

4-25 mIU/ml

Women

4-30 mIU/ml

Women (Midcycle)

2 x baseline

Women      (Menopausal)

40-250 mIU/ml

FTI

Men

1.3-4.2

Women

1.75-4.95

Glucose - Fasting

Men

70-110 mg/dl

Women

75-115 mg/dl

Pregnancy

60-105 mg/dl

Glucose: 2 Hour Post Prandial

<140 mg/dl

Glucose: Pregnancy Screening

Post 50 G Glucose Load

<135 mg/dl

Glucose: Gestational Diabetes Criteria

Post 100 G Glucose Load

Fasting

95 mg/dl

1-Hour

180 mg/dl

2-Hour

155 mg/dl

3-Hour

140 mg/dl

If two or more of these values are exceeded, gestational diabetes is present.

Hepatitis B Surface Antigen

Negative

LDH

Men

95-200 U/L

Women

200-450 U/L

Pregnancy

200-450 U/L

LH

Men

7-24 mIU/ml

Women
(Follicular Phase)

6-30 mIU/ml

Women
(Midcycle)

>3x baseline

Women 
(Menopausal)

>30 mIU/ml

Magnesium

Men

1.7-2.8 mg/dl

Women

2-3 mg/dl

Pregnancy

1.6-2.1 mg/dl

Therapeutic Range in Pre-eclampsia

4-7 mEq/L

Phosphorus

Men

2.7-4.5 mg/dl

Women

3.0-4.5 mg/dl

Platelets

150,000-350,000/cu. mm

Potassium

Men

3.5-5.0 mEq/L

Women

3.5-5.0 mEq/L

Pregnancy

3.3-4.1 mEq/L

Pregnancy Test

Negative

Prolactin

Men

<20 ng/ml

Women

2-15 ng/ml

Pregnancy

50-400 ng/ml

Protein (Total)

Men-Women

3.8-5.0 g/dl

Pregnancy

3.0-4.0 g/dl

PT

Men-Women

10-14 seconds (100%)

Therapeutic Range on oral anticoagulants

2-2.5 times normal, but not >30 seconds

PTT

PTT

30-45 seconds 

APTT

16-25 seconds

Therapeutic
Range on oral anticoagulants

2-2.5 times normal

SGGT

Men

8-20 U/L

Women

4-18 U/L

SGOT

Men

8-20 µ/L 

Women

6-18 µ/L 

Children

25-75 µ/L

SGOT

Men

7-17 U/L

Women

0-35 U/L

Pregnancy

0-35 U/L

Sodium

Men

135-138 mEq/L

Women

136-145 mEq/L

Pregnancy

130-140 mEq/L

T3

Men

120-195 ng/dl

Women

70-190 ng/dl

Pregnancy

100-220 ng/dl

T4

Men

5-12.5 µg/dl

Women

5-12 µg/dl

Pregnancy

10-17 µg/dl

T7 (FTI)

Men

1.3-4.2

Women

1.75-4.95

TSH

Men

0.5-6 mIU/L

Women

4-5 mIU/L

Triglycerides

Men

40-160 mg/dl

Women

35-135 mg/dl

Pregnancy

<260 mg/dl

Children

30-138 mg/dl

Uric Acid

Men

3.5-7.2 mg/dl

Women

1.5-6.0 mg/dl

Pregnancy

1.2-4.5

*These are general values taken from a variety of sources. The actual normal values may vary from lab to lab and from one type of testing protocol to another.

Source: Operational Medicine 2001,  Health Care in Military Settings, NAVMED P-5139, May 1, 2001, Bureau of Medicine and Surgery, Department of the Navy, 2300 E Street NW, Washington, D.C., 20372-5300

OB-GYN 101: Introductory Obstetrics & Gynecology
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